Vitapur GWF8 Water Filtration System For Top-load Water Dispensers System includes one multi-stage filter that lasts for up to 6 months or 800L (42 five-gallon jugs of water) Environmentally friendly and BPA-free Manual date indicator lets you know when it's time to change the filter Float design ensures no leaks Tested and certified by CSA to meet the requirements of NSF/ANSI Standard 42 and CSA B483.1 for the reduction of chlorine taste and odor